// Copyright 2020 Datafuse Labs.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

pub struct ExitGuard<F: Fn()> {
    function: F,
}

impl<F: Fn()> ExitGuard<F> {
    pub fn create(f: F) -> ExitGuard<F> {
        ExitGuard { function: f }
    }
}

impl<F: Fn()> Drop for ExitGuard<F> {
    fn drop(&mut self) {
        (self.function)();
    }
}
